Air Ground Cooperation
Summary
ATM 2003 Budapest, 23-27 June 2003
Rapporteur: W. Post
AGC Sessions:
Tuesday
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Session 1: 2 papers
Chair:
A. Haraldsdottir
Wednesday
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session 2: 3 papers
session 3: 2 papers
S. Green
A. Haraldsdottir
Thursday
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Session 4: 3 papers
Session 5: 2 papers
Session 6: 2 papers
27 June 2003
F. Casaux
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ATM 2003 Budapest, 23-27 June 2003
Scope overview
Subjects (paper nrs):
Conceptual papers (106, 112, 115, 36)
Co-operative (arrival) spacing (56, 77, 97, 99, 102)
Conflict Management (14, 17, 40)
Aircraft Intent (55)
Delay cause and propagation (91)
Also relevant: (9)
27 June 2003
3
Conceptual papers (106, 112, 115)
Overall ATM
ATM 2003 Budapest, 23-27 June 2003
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Layered ATM system (Villiers, now 35 years ago!)
Scope of layers needs to be optimised
– task, time and geographical scope
– Planning vs. flexible and adaptive control
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Main theme:
– 4D (Flow and complexity) and 3D (separation)
– How to make both modes interoperable
– Supersector: More ATCos in sectors
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Conceptual; no results
27 June 2003
4
Conceptual papers (36)
Working in the Ops Room
ATM 2003 Budapest, 23-27 June 2003
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creative approach to redesigning the working
environment of the ATCO, borrowing from other
disciplines like music and theatre.
so far mainly applied to Ops room aspects.
challenge is to apply it also to the process of ATM
service delivery.
27 June 2003
5
Co-operative arrival spacing (56,97,99)
ATM 2003 Budapest, 23-27 June 2003
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final approach application [56]
– using speed guidance for pilot
– time based, ADS-B technology
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Arrival Operations
– ground based (trying to improve DAG-TM CE6) [97]
– 4D Trajectory based; advanced tools
– suggested to complement with ADS-B based relative approach
– Comparing free manoeuvring, mixed equipage (CE5) and
trajectory negotiation (CE6) with baseline [99]
– both better than baseline; conditions tested did not reveal
differences between CE5 & CE6
27 June 2003
6
Co-operative spacing (77,102)
Control laws oriented
ATM 2003 Budapest, 23-27 June 2003
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Time based or distance based separation
Anticipating ADS-B data of leading aircraft
Still need to cover ‘train’ of aircraft
27 June 2003
7
Conflict Management (14, 17, 40)
Free manoeuvring, mixed equipage (CE5)
ATM 2003 Budapest, 23-27 June 2003
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designing a safe concept
– Recovery after loss of separation [14]
– Collision avoidance rather than conflict management?
– Constrained scenario
– need for priority rules [40]
– meeting RTA while separating under constraints [17]
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Pilot should not fall back on ATCO if things get bad
Can results contribute to collision risk analysis?
Benefits need be made clearer
27 June 2003
8
Aircraft Intent (55)
How much, for whom and when
ATM 2003 Budapest, 23-27 June 2003
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Measured by looking at benefit to separation
assurance process (CD&R)
– Ground based responsibility
– Air based responsibility
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10 minutes aircraft intent felt most useful
Intent has positive effect on flight efficiency
27 June 2003
9
Delay cause & propagation (91)
En-route delay
ATM 2003 Budapest, 23-27 June 2003
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Historic flight data.
Propagation back from airports.
Some 30% of delays not attributable to airport
problems.
27 June 2003
10
Conclusion
Trying to find the best of 3D and 4D
ATM 2003 Budapest, 23-27 June 2003
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Neither one solves the whole future ATM problem.
R&D streams are getting closer together.
Challenges of interoperation.
Waiting for the right step forward.
Read the papers
27 June 2003
11